Pompeii's less famous neighbor is still revealing her secrets.

Thousands of well-dressed mummies below a monastery.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A submerged archeological park still holds the wonders of a Roman Sodom.

A 16th-century horror show built in a lovely Italian garden.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Renaissance villa and gardens complete with a tormented colossus.

A Netherlands hotel where you can sleep inside a wine barrel.

A kaleidoscopic warehouse-maze of handmade neon signs.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The cedar tree in Highgate Cemetery earned its title by accident.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

A historic house left in "dramatic still life."

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A famous burial ground with a history both grim and literary.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

An incarceration museum on the spot of possibly the oldest prison in England.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.